Failure to report mild symptoms combined with highly contagious nature of disease raises fears existing figures are ‘tip of the iceberg’Coronavirus latest - live updatesGlobal health experts have warned that “hidden” infections make containment of the coronavirus unlikely and raised fears that the rapidly rising caseload of 25,000 people could be the “tip of the iceberg”.“Hidden” cases – where people with mild symptoms do not seek medical help and so remain untested and unrecorded – combined with the highly contagious nature of the disease mean there could be “vastly more cases” than previously thought, according to Tom Frieden, a former director at the US Centers for Disease Control and Prevention. Continue reading...

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The World Health Organization (WHO) on Tuesday confirmed that the global death rate for coronavirus is...

The World Health Organization (WHO) on Tuesday confirmed that the global death rate for coronavirus is 3.4% — higher than earlier estimates of about 2%.
In contrast, the seasonal flu kills far less than 1% of those infected.
It's also important to remember that the fatality rate of the disease is based on several factors, including where a patient is being treated, their age, the severity of the disease, and any pre-existing health conditions they might have.
Experts have also predicted that the fatality rate of the disease will likely decrease as the number of confirmed cases continues to rise.
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The World Health Organization confirmed on Tuesday that the global death rate for the novel coronavirus is 3.4% — higher than earlier estimates of about 2%.
The coronavirus outbreak that originated in Wuhan, China, has killed more than 3,100 people and infected nearly 93,000 as of Tuesday. The virus causes a disease known as COVID-19.
Speaking at a media briefing, Director-General of the WHO Tedros Adhanom Ghebreyesus said that, globally, about 3.4% of reported COVID-19 cases have died. In contrast, the seasonal flu kills far less than 1% of those infected.
The mortality rate of coronavirus will also likely change as more cases are confirmed, and experts predict the percentage of deaths will decrease as the number of confirmed cases continues to rise.
"There's another whole cohort that is either asymptomatic or minimally symptomatic," Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, said in a briefing last month. "We're going to see a diminution in the overall death rate."
'It is a unique virus with unique characteristics'
Tedros noted differences between the coronavirus and other infectious diseases, like MERS, SARS, and influenza. He said that data suggests COVID-19 does not transmit as efficiently as the flu and that people who are infected but not yet sick with the flu are major transmitters of the disease, which does not appear to be the case for coronavirus.
He added that COVID-19 appears to cause a "more severe disease" than the seasonal flu, and explained that while people around the world may have built up an immunity to the flu over time, the novelty of the coronavirus means no one yet has immunity, and more people are susceptible to infection.
"It is a unique virus with unique characteristics," he said.
Tedros said last week that the mortality rate of the disease can differ greatly based on the country of treatment. He added that people with mild cases of the disease will recover in about two weeks, and those with severe cases may take three to six weeks to recover.
Despite the higher global death rate, the number of fatalities is based on several factors
The fatality rate of the disease is based on several factors, including where a patient is being treated, their age, the severity of the disease, and any pre-existing health conditions they might have.
Coronavirus cases have been reported in at least 76 countries, with a vast majority occurring in China.
A study conducted last month from the Chinese Center for Disease Control and Prevention showed that the virus most seriously affected older people with preexisting health problems. The data suggests a person's chances of dying from the disease increase with age.
Notably, the research showed that patients ages 10-19 had the same chance of dying from COVID-19 as patients in their 20s and 30s, but the disease appeared to be much more fatal in people ages 50 and over.
About 80% of coronavirus cases are mild, the research showed, and experts think many mild cases haven't been reported because some people aren't going to the doctor or hospitals for treatment.
Here's how the coronavirus compares with a handful of other major outbreaks.
Aria Bendix contributed reporting.
Read more:
Everything we know about the Wuhan coronavirus outbreak
Men represent the majority of coronavirus cases so far. Researchers think smoking could play a role.
As the coronavirus outbreak worsens outside of China, hopes of containing it are diminishing
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The truth about the protective value of face masks and how easy it is to catch...

The truth about the protective value of face masks and how easy it is to catch Covid-19Coronavirus – latestHow to protect yourself against coronavirusMany individuals who get coronavirus will experience nothing worse than seasonal flu symptoms, but the overall profile of the disease, including its mortality rate, looks more serious. At the start of an outbreak the apparent mortality rate can be an overestimate if a lot of mild cases are being missed. But this week, a WHO expert suggested that this has not been the case with Covid-19. Bruce Aylward, who led an international mission to China to learn about the virus and the country’s response, said the evidence did not suggest that we were only seeing the tip of the iceberg. If borne out by further testing, this could mean that current estimates of a roughly 1% fatality rate are accurate. This would make Covid-19 about 10 times more deadly than seasonal flu, which is estimated to kill between 290,000 and 650,000 people a year globally. Continue reading...